Home / 20,389,543,190.64-28,141,478,006.40-11,478,871,946.88

Finding the Fourth Proportional to 20,389,543,190.64, 28,141,478,006.40 and 11,478,871,946.88

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Solution

The fourth proportional to 20,389,543,190.64, 28,141,478,006.40 and 11,478,871,946.88 is: 15,843,043,633.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,389,543,190.64 : 28,141,478,006.40 = 11,478,871,946.88 : x
  2. Step 2: Convert to fraction form
    20,389,543,190.64/28,141,478,006.40 = 11,478,871,946.88/x
  3. Step 3: Cross multiply
    20,389,543,190.64x = 28,141,478,006.40 × 11,478,871,946.88
  4. Step 4: Simplify right side
    20,389,543,190.64x = 323,032,422,431,405,441,024
  5. Step 5: Solve for x
    x = 323,032,422,431,405,441,024/20,389,543,190.64
  6. Step 6: Final answer
    x = 15,843,043,633.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.